What Is Software Design | Levels | Objectives And Importance 2022 [Complete Guide]
What exactly is software design?
Do you have questions on the following topics of software design: what is software design, what are the main types of software design, why is software design important, how to solve design problems, and how many design principles are there?
So let’s learn about software design.
Software Design: What Is It?
Software design is a plan for organising your application’s code. It’s simple to define, but is it easy to do? Well, that’s a different circumstance, but if you’re going to design software for your new project, you need to recognise its importance.
Software design is the process of transforming user needs into a suitable form. which helps the programmer in software coding and implementation. The software design phase involves the production of a design document, which is then based on the customer requirements that are described in the SRS document. As a result, the transformation of the SRS document into the design document should be the focus of this phase.
Levels of Software Design
- Architectural Design: The most abstract form of the system is represented by its architectural design. There are various components that interact with one another in the software. At this point, the designers have a general notion of the problem domain they’re trying to solve.
- High-level Design: The high-level design separates the’single entity-multiple component’ architectural design concept into sub-systems and modules and displays their interaction. High-level design focuses on how to implement the system’s modules. It recognises sub-system modularity, relationships, and interaction.
- Detailed Design: The detailed design implements the system and subsystems from the previous two designs. It details modules and their implementations. It describes each module’s logical structure and communication interfaces.
Software Design Objectives
- Correctness: A good design should be right, which means that it should implement all of the functionalities of the system in the correct manner.
- Efficiency: The challenges of optimising resources, time, and money should be addressed in a well-designed piece of software.
- Understandability: A good design must be simply understandable, which is why it should be modular, and for this reason, all the modules need to be grouped into layers.
- Completeness: The design needs to include all of the components, such as data structures, modules, and external interfaces, among other things.
- Maintainability: When a modification is requested from the client’s end, a good software design should be easily adaptable to accommodate the change.
Software design’s importance
Creating a foundation for your software structure code is the process of software design, as previously said. This is what makes software design the most important component of software development, although there are many aspects of it that may provide appropriate answers to this question.
Let’s discuss why software design is important and how it’s similar.
Some reasons why software design is important:
- Modularity is significant: Modularity is first in software design. It involves dividing a big software project into modules. It involves dividing the software project into modules for ease of work. Splitting a key software project into modules helps with every requirement. It allows future adjustments. If your client’s needs change, you can restructure a module, not the entire project. It’s easier to discover faults in modules than in complex programmes.
Software design is important because modularity simplifies and improves it.
- Excellent maintainability: Creating software modules makes maintenance easier. Software design makes tasks like detecting problems, debugging, reorganising, and modifying elements functionality easy. Good software design lets you change the software’s appearance, functionality, etc. by working on a module. If you’ve previously created a software application but need to update its interface, you can make the modification in its interface module without affecting any other modules. Software design assists with application maintenance.
- Functionality and performance: The design of a software application reflects its performance. Good software design shows the flow of functions while executing. From input to output, a software design must show all phases so its performance may be evaluated. If a software developer hands over a project to another, the new developer should be able to grasp it by reading the programme design.
- Portability and Tracking: Portability helps while changing software. Software portability allows functionalities to be transferred from one module to another, changing the functionality of software applications. Software trackability is also significant. Trackability is the ability to monitor programme functions. Good software design makes the application easier to use and maintain.